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L. P. J-UVET.

TIME GLOBE.

Patented Jan. 1 1867.

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LOUIS PAUL JUVET, OF GLENS FALLS, NEW YORK. Lam Patent 1%. 60,740, dated Jtmuary 1, 1867.

IMPROVEMENT IN TIME GLOBES-.

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TO ALL WHOM 1T MAY CONCERN:

Be it known that I, LonIs PAUL Jnvnr, of Glens Falls, in the county of Warren, and State of New York, have invented a new and improved Time Globe; andI do hereby declarethat the following is a fall, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawing, forming-part of this specification, in which Figure l'represents a front elevation of this invention.

Figure 2 is a transverse vertical section of the same.

Similar letters of reference indicate like parts.

The nature of my invention consists in the special construction and arrangement of the chronometer movement within the globe, by which to revolve it,ss also the means "by which said chronometer is wound up. To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation,

A represents a hollow'terrestrial globe, formed of two symmetrical halves, capable of hing easily put together or separated, and the axis of which is represented by a a, being secured in a semicircular support, B, This support is secured to an upright stem, c, which can he raised or lowered, as well as turned, at pleasure, anri secured in position by aiset-sorcw, E, orby-any other suitableeqnivalent means, it being inside of a standard, F. In order to bring the axis a a to a proper angle, corresponding to the latitude under which the globe is to be used, the semicircular support, 13, may be so arranged, by means of a slide and screw, or otherwise, as to effect said object. A ring, D, of metal or other suitable material, is secured to the semicircular ring, B, and surrounds the globe in a planecoinciding with the plane of the equator. The surface of this equatorial ring is divided off into twenty-four equal parts, marked with figures running twice from I to XII, and as the globe revolves within the said ring, the meridians, marked on its surface, by coming opposite the marks and figures on :said ring D, indicate the correct time for the various localities on the globe. The difference of time in diii'erent longitudes can-thus be ascertained at a glance, and by having the globe attached to its axis so that said axis is placed at the proper inclination, and that all parts of the globe (or nearly so) are visible, the observer is enabled to obtain a correct idea of the daily: revolution of our earth around its axis, and of its position in the universe. The striking result of this to a student is too apparent to need any argument.

I specially adapt or construct my ohronometer for the purpose designated, as follows: firstly, and what I deem of great importance, is, I have a solid axis, & a, extending unbroken from pole to pole, and made fast to semicircle B at its lower end a. To this axis the lower platefof the worksis securely attached, so that the works and axis are stationary. Between the platesf and got the works, and in the centre, is the barrel-wheel, h, containing the mainspring. The arbor, b, of this barrehwheel is adjusted on and around the axis a a. It (6) extends in one direction through the globe and semicircle B, as seen at a, and by means of a thumb-piece or nut, T, attached .to its extremity, the chronometer can be wound from the outside without any aperture in the globe, or the use of any extra key whatever.

Connecting with the barrel-wheel is a suitable train of pinions and gear-wheels, so as to impart to the daily wheele its proper motion, viz: one revolution in twenty-four hours. This wheel revolves on and around the axis, and transmits to the globe its own motion by means of the sleeve or arbor, :1 cl, attached to it, so that the globe gives one revolution for each one of the wheel.- This sleeve or arbor d d is made in two parts, dandrl, the former attached to the daily wheel, a, the latter revolving by hard friction on the other, and made square where it passes through the globe, which has a corresponding aperture. It will be seen by this simple arrangement the globe receives the motion imparted to it by the daily wheel, and yet as the part of sleeve (Z can'rcvolve independently of the rest of the works, the globe can be easily set to the time in case its chrononieter has not been regulated, or if it has stopped.

Having thus described my invention, what I claim as new, and desire to secure by Lett'ers Patent of the United States, is-

1. Making the axis of the daily wheel e of a chronometer (applied to revolve a hollow globe, and located in its interior) coincident with the axis of said globe, in the manner substantially as shown and described, and for the purpose set forth.

2. Winding the said chronometer from the outside of-the globe, without tho useoi' a key, by means ot the thumb-piece T, and sleeve 6, and its connections, in the manner substantially as shown and described, ant! For the purpose set forth.

3. The combination of the solid axis a a with the sleeves b and d d, the former, b, by which to wind up the works from the outside, and the latter, d d, by which to transmit-the proper motion to the globe, said parts being constructed, arranged, and operating in the man er substan ially a sh wn a d described, and for the purpose set forth.

LOUIS PAUL JUVET.

Witnesses:

WM. Bmsos, CARTER Monsm. 

